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  • R3K-36 series | DC power supply Benchtop | Matsusada Precision
  • R3K-36 series
  • R3K-36 series | DC power supply Benchtop | Matsusada Precision
  • R3K-36 series

World's smallest Programmable DC Power Supply

  • Max Voltage: 8V to 36V
  • Max Current: 1A to 3A
  • Max Power: 24W to 36W
  • Ultra Slim

Compact and lightweight design by our original low noise switching technology

R3K-36 series is an ultra-compact, high-performance DC power supply that achieves sufficient output of 36 W in the "palm-sized." The 35 mm wide ultra slim DC power supply employs both output voltmeter and current meter as the standard equipment enabling simple operation and easy to use.

This DC power supply featuring multi-set and anti-sink functions is suitable for quality inspection and the best lab power supply.

Features and Benefits

  • Saving space by compact and light weight design
  • Suitable for research application by it's ultra low noise feature
  • Outstandingly quiet operation with Fan-less Power Supply Unit (PSU)
  • Standard visual meters excellent in quickly checking both output voltage and output current
  • Speedy settings of output voltage and output current

Ultra compact!

compact1 | R3K-36 series | DC power supply Benchtop | Matsusada Precision
compact2 | R3K-36 series | DC power supply Benchtop | Matsusada Precision

Models

  1. The ripple is applied in the rated output from 10% to 100%.
  2. You can change the input voltage, and refer to options.
Model Output Ripple *1 (rms) Minimum setting unit AC input
Voltage
[V]
Current
[A]
Power
[W]
Voltage Current Voltage Current Voltage *2 Current
[typ.]
R3K36-1 0 to 36 V 0 to 1 A 36 W 5 mV 5 mA 100 mV 10 mA 115 V ± 10%
50/60 Hz
single phase
1 A
R3K18-2 0 to 18 V 0 to 2 A 5 mV 5 mA 100 mV 10 mA
R3K8-3 0 to 8 V 0 to 3 A 24 W 4 mV 4 mA 10 mV 10 mA

Functions

Multi Setting Function

Memorize three voltage and current settings in addition to the standard preset values.
There is no need to adjust the output when different setting, and convenient function for production inspection process or testing which require frequent data taking.

Multi Setting Function | R3K-36 series | DC power supply Benchtop | Matsusada Precision
Sink Current Suppression | R3K-36 series | DC power supply Benchtop | Matsusada Precision

Sink Current Suppression

  

When supplying power to loads with capacities like batteries and capacitors, the sink current suppression is used to reduce the reverse current flowing from the load to the unit in order to prevent a voltage drop on the load as the output is OFF or the set voltage is lowered.

Note
Reverse current cannot be controlled and stabilized. Connect a dummy resistor or reverse current prevention diode when load of the reverse voltage is equal to or higher than the rated voltage (inductive loads, regenerative motors, etc.)

Two Mode Lock Function

  

Two modes can be selected; "Full Lock" which locks all front panel operations, "Standard Lock" which locks all operation except for OUTPUT ON/OFF.
"Full Lock" mode shall be good in case mis-operation have to be completely avoided, and "Normal Lock" mode shall be good in case to avoid mis-operation but secure the way for emergency stop of power supply. You can select the best mode according to your level of "Security".
(In both modes, emergency stop is possible with Power Switch.)

Full Lock

Lock all the function other than reset lock mode, and effective for purpose to avoid mis-operation when controlled.
Full Lock | R3K-36 series | DC power supply Benchtop | Matsusada Precision

Standard Lock

Lock voltage and current setting dial, and effective for purpose to avoid changing output setting by mistake or when easy emergency stop is required.
Standard Lock | R3K-36 series | DC power supply Benchtop | Matsusada Precision

Remote Control Functions

External output ON/OFF

External output ON/OFF | R3K-36 series | DC power supply Benchtop | Matsusada Precision

* +S is common. The external control voltage shall be input with +S as reference. Otherwise it can cause failure.

Remote sensing

Compensate the voltage drop (V0-VL) due to resistance of output lead or drop of stability by contact resistance. (maximum 0.5 V)

Remote sensing | R3K-36 series | DC power supply Benchtop | Matsusada Precision

Specifications

For details, download the datasheet below.

Options

-LH: Higher isolation voltage
With isolation voltage by ±1kV, more R3K-36 series power supplies are available in series connection.
Input voltage change Option
  • -L(120V): 120 Vac ±10% input
  • -L(200V): 200 Vac ±10% input
  • -L(220V): 220 Vac ±10% input
  • -L(230V): 230 Vac ±10% input
These options cannot be equipped together.

How to Order

When ordering, add Option No. in the following order by alphabet, and input voltage to Model No.
Example: R3K18-2-LH(200V)

Accessories

AC input cable

Standard CABLE TYPE1 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 125 V / 10 A 2.5 meters

Fixed length

Standard
[for -L(230V)]
CABLE TYPE3 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 250 V / 10 A 2.5 meters

Fixed length

Sold separately CABLE TYPE4 CABLE series | AC input cable | Matsusada Precision CABLE series | AC input cable | Matsusada Precision 250 V / 10 A 2.5 meters

Fixed length

Dimensions

For details, download the datasheet below.

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